Contents
1 Consonants
2 Vowels
3 Phonological processes
3.1 Consonant processes
3.1.1 Weakening
3.1.2 Palatalization and affrication
3.1.3 Moraic nasal
3.1.4 Moraic obstruent
3.1.5 /d, z/ neutralization
3.2 Vowel processes
3.2.1 Devoicing
3.2.2 Nasalization
3.2.3 Glottal stop insertion
4 Moras and phonotactics
5 Prosody
6 Notes
7 Bibliography

http://en.wikipedia.org/wiki/Japanese_phonology#Consonants